Section 30.05 of the Texas Penal Code defines criminal trespassing. This law also describes how to give proper notice of forbidden entry. This includes the use of purple paint marks according to very specific rules. According to Sec. 30.05, the purple marks must be:
vertical lines at least 8 inches long and at least 1 inch wide
placed so that the bottom of the mark is at least 3 feet but no more than 5 feet from the ground
placed at locations that are clearly visible to any person approaching the property and no more than:
Disclaimer: The State Law Library cannot tell you what a law means for your situation. Please contact an attorney for help determining what the law means for you. If you have questions or need help finding resources, please ask a librarian.